package study2019.daily;

import org.junit.Test;

public class January {
	@Test
	public void test1() {
		String str = "Are you killing me？";
		str.replace("ll", "dd");
		System.out.println(str);
	}

	@Test
	public void test2() {
		String str = "Are you killing me？";
		str = str.replace("ll", "dd");
		System.out.println(str);
	}
}
